steinmann



2 Sheets-Sheet 1.

F. STEINMANN.

PUMP

(No Model.)

Patented Sept, 3, 1889.

(No Model.) 2 Sheets-Sheet 2. F. STEINMANN.

PUMP. No. 410,462. Patented Sept. 3, 1889.

W A I ZZ'zr'gJfl g7 Q6 n 7 N. PETERS, rmmuum m lw. Walhinglnn. D c

UNITED STATES PATENT OFFICE.

FRANK STEINMANN, OF ST. LOUIS, MISSOURI.

P U M P.

SPECIFICATION forming part of Letters Patent No. 410,462, datedSeptember 3, 1889.

Application filed December 15, 1888. Serial No. 293,698. (No model.)

' Fig. II is a vertical transverse section taken on line II II, Fig. I.Fig. III is avertieal longitudinal section taken on line III III, Fig.IV. Fig. IV is a vertical transverse section taken 011 line IV IV, Fig.III. Fig. V is a vertical longitudinal section taken on line V V, Fig.IV. Fig. VI is a vertical transverse section taken on line VI VI, Fig.III.

My invention relates to certain improve ments in power-pumps; and myinvention consists in features of novelty hereinafter fully described,and pointed out in the claims.

Referring to the drawings, 1 represents a steam-engine in outline. Thepiston-rod 2 of the engine is secured to the piston 3 of the pump. Thepiston works in a cylinder 4, located within a housing 5 andcommunicating at its respective ends with water-chambers (5 and 7.

8 and 9 represent water-chambers between the cylinder and housing, withwhich communicate an inlet-port I0 and an outlet-port 11. (See Fig. V.)

Surrounding the cylinder 4: at each end is a flange 12, through whichare formed ports or openings, each surrounded by a head or chamber 25,projecting inwardly toward the mid-length of the cylinder -I. The lowerof these ports or openings communicate with the inlet-chamber S cm thelower chambers or heads 25, and they are guarded by outwardlyopeningvalves 13, adapted to admit water from the chamber 8 to the chambers 67, arranged one at each end of the cylinder 4 outside of the valves andcommunicating with said cylinder through the open ends of the latter,and the upper of these ports or openings in the flanges 12 are guardedby inwardly-opening valves 14, adapted to permit the escape of waterfrom the chambers 6 7 into the outlet-chamber 9. The valves 13 (see Fig.III) each seat against a ring 15, screwed in the ports or openings inthe flanges I2 and connected by arms to a central stem 17, which isprovided with a plug 18, that fits in an opening 19 in the head 25. Eachof the lower plugs 18 is provided with a socket to receive a wrench, andby turning it the ring 15 is unscrewed, and the valve can be thus easilyremoved for repairs. Each valve is held upon its seat (except whenforced open) by means of a spring 20, surrounding the stem 17 outside ofthe valve and located between the valve and a disk 21 on the stem. Thevalves II are held against their seats 22 by means of springs 23,surrounding short stems or projections 2 L of plugs 25, one screwed intoan Opening 26, made in each of the heads 25.

The operation of the pump is as follows: lVhen the piston moves in thedirection indicated by the arrows in Fig. V, the water passes from thechamber 8 into the chamber 6 and cylinder 4 behind the piston, and thewater that is in advance of the piston at the same time passes from thechamber 7 through the valve ll into the chamber 9 and escapes throughthe port 11. Then, as the piston moves back or in the other direction,the water in the chamber 8 passes through the other valve 13 into thechamber 7 and into the cylinder behind the piston, and the water infront of the piston passes from the chamber (3 through the valve 14 intothe chamber 9.

The upper end of the port 11 is provided with openings 27 and anairchamber 28. There may be more than one of the openings 27, and, ifso, all but one will be closed by the plugs 29. The dischargepipe isconnected to any one of these openings 27, as desired, and if it isdesired to use the machine in a vertical position the air-chamber may bescrewed into one of the openings 27 and the water discharged through theopening which the airchamber occupies in Fig. I.

I claim as my invention- 1. In a pump, the combination, with thecylinder I and piston 3, of the flange 12, having ports therethrough,chambers 6 7 at the ends of said cylinder communicating therewith andwith said ports, the inlet and outlet chambers 8 9, the chambers orheads 25, connectingsaid chambers 8 9 at both ends with the chambers 6'7, removable plugs having valve-stems secured in the rear of said headsor chambers 25, and the valves 13 14, situated on said stems andguarding the ports in said flanges 12, substantially as set forth.

2. In a pump, the combination, With the cylinder 4 and piston 3, of thechambers 6 7 at the ends of said cylinder, the inwardlyprojecting headsor chambers 25, the flanges 12, dividing said chambers 25 from thechambers 6 7 and having ports forming communication between saidchambers 6 and 25 and 7 and 25, the inlet and outlet chambers S 9, ex-

